Most pneumonia infections are caused by a virus or bacteria. What characteristic could scientist use to distinguish an infection caused by bacteria from an infection caused by a virus? Group of answer choices The bacteria would grow by itself outside the person. The virus would have DNA. The bacteria would make another person sick. The virus would have proteins.

The bacteria would grow by itself outside the person

Explanation:

The bacteria would grow by itself outside the person. - this is correct.  Bacteria are independent organisms that do not need other cells to replicate. However, viruses require the cell's machinery to divide and cannot survive independently

The virus would have DNA. - Both bacteria and viruses have DNA (or the virus might have RNA)

The bacteria would make another person sick. - Both viruses and bacteria could make another person sick

The virus would have proteins - Both viruses and bacteria have proteins

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.